Carbon holding device



c. L. WINTER. v 2 1 I C-ARBON HOLDING DEVICE I F i led March 25, 1955ZUirzfkr." I 4% Patented Aug. 24, 1937 Application March 25, 1935,seaa,1 o..}f1g, 9tg q 4 Claims.

This invention relates particularly to duplicating machines and improvedmeans for separating stationery strips and supporting a transfer stripin interleaved relation with the stationery.

The primary object of the invention is to provide an improved carbonsupporting bar having a rearwardly extending slitter bar which serves toprotect the folded end of a transfer strip anchored thereto.

The device has particular utility in connection with typewritingmachines adapted to fill in forms on continuous form stationery. Thedevice, if desired, may be mounted so as' to move forwardly with thestationery to. writing position and may later be retracted to strip thetransfer material into the next succeeding set of forms as is wellunderstood in the art; Heretofore carbon holding blades have beenprovided to extend from one lateral edge of the supporting device intointerleaved relation with the stationery, particularly with fanfoldstationery, and in some cases slitters have been provided in the memberto separate the fanfold stationery at its connected edge. However, thepresent carbon blade is supported in a novel manner so as to floatbetween the stationery strips, that is, the blade is allowed to moveslightly up or down on the supporting posts. The blade is inexpensive,easy to use, and is interchangeable with other carbon supporting bladesin the same device.

The invention is illustrated in the preferred embodiment illustrated inthe accompanying drawing, in which, v

Fig. 1 is a broken side elevatfonal view of a device embodying theinvention; Fig. 2 is a transverse sectional view taken as indicated atline 2 of Fig. 1; Fig. 3 is a plan view of the same with the stationerypartly broken away; and Fig. 4 is a. longitudinal section of the bladetaken as indicated at line 4 of Fig. 3.

In the embodiment illustrated, A designates a base member equipped withupwardly extending posts A; B, a blade having a transverse slitter bar Band a transverse carbon-anchor bar B 3 The base member A comprises asheet metal plate having its rear end portion curled downwardly to forma guide bar l0 over which fanfold stationery il may be drawn. The frontportion of the plate is equipped with laterally extendingiarms 12 whoseedge portions l3 are turned downwardly to form flanges and receive apivotally mounted bail M. The plate is-equippedwith suitable downwardlyextending studs I5 which enable the device to be secured to a bracket l6provided on the duplicating machine. The posts A preferably are slottedas indicated at, to reduce the weight of the device and are secured tothe base member by nuts l8. Preferably, theposts are of rectangularcross section and have a cut away portion is so that the bail 14 may besnapped into vertical position. The base plate is further provided atits rear end with laterally extending guide fingers 20 j whichareadjustably secured to the by means of screws2l. v The blade Bpreferably is made-of sheet metal such as aluminum and has laterallyextending ears 22 which are'adapted to fit loosely over the posts A. Theslitter'bar B is integrally formed therewith and extends .rearwardlybetween the strips of the advancing stationery. Its end portions 23'extend forwardly and outwardly towards the ears 22 and serve as slittersfor the edge portions of the, fanfold stationery H. The transversecarbon-anchoring bar B is integrally base plate formed with the slitterbar and is adapted to receive the folded end portion 24 of the transv.

.fer strip 25 through a lateral slot 26. The slot hasrearwardlyextending cut outportions 2! to facilitate insertion of light springclips 28 around the fold 24.

. a It will be'seen that the support thus provided permits theblades Bto be moved up and down slightly on the posts A under the influence ofthe rearwardly extending bar B. The blades may be inverted and theirrelative position in a pile is immaterial as no spacers are providedbetween the ears 22. 1

The foregoing detailed description has been given for clearness ofunderstanding only, and no unnecessary limitations should be understoodtherefrom, but the appended claims should be construed as broadly aspermissible, in view of a the prior art. I I What I regard as new, anddesire to secure by Letters Patent, is:

. 1. A carbon-holding device for a typewriting machine comprising: abase-member over which fanfold'stationery-strips may be drawn forwardlyinto writing position, said base member having at each lateral. endportion an upwardly extending post; and a thin carbon-holdingbladeadapted. to be interleaved with said. stationery and loosely impaled byboth of said posts so asto float between the stationery strips. H 2-.'Acarbon-holdingdevice for a duplicating machine comprising: a base-memberover which each lateral end portion an upwardly extending post; a thincarbon-holding blade adapted to be interleaved with said'stationery andloosely impaled by both of said posts so as to float between thestationery strips, said blade comprising a transverse bar towhichtherear ends 01 carbon strips may'be anchored, and an integrally formedparallel slitter bar whose rear edge is of less width than said stripsand whose end portions extend fanfold stationery-strips may be drawnforwardly into writing position, said base member having at having rearlateral end-portions tapering forwardly and outwardly towards said earsto form :slitters, said blade having a transverse slot adapted toreceive the rear end portion or a transfer strip. p

4. A carbon-holding and paper slitting device adapted to float betweenstrips of continuous- I ;form fanfold stationery comprising: althinblade having lateral mounting-ears and rear lateral end-portionstapering forwardly and outwardly towards said ears to form slitters,said blade having a transverse slot adapted to receive the rear endportion of a transfer strip, said slot having rearwardlyextendingcut-out portions whereby ,separatecarbon clips may be admitted to clampsaid transfer slip over the front portion of the blade;

CHARLES LQwm'rER.

